| Source: Business letterheads Location: Archives | |
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| Business Name: | Southworth Machine Company |
| Building Illus: | No |
| City, if not Saint Louis: | Portland, Maine |
| Date: | 1924 Feb 9 |
| Collection: | A0214 |
| Volume: | 3 |
| Page: | 22 |
| Items: | 1 |
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